Non-ideal boson system in the Gaussian approximation

DOI10.1006/APHY.1997.5625zbMath0915.46067arXivcond-mat/9609059OpenAlexW1984051832MaRDI QIDQ1269385

Paolo R. I. Tommasini, A. F. R. de Toledo Piza

Publication date: 28 June 1999

Published in: Annals of Physics (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/cond-mat/9609059

zbMATH Keywords

two-body interactionsGaussian mean-field approximationhigh momentum cutoffquantized field operatorssystem of non-relativistic bosonsthermodynamically unstable phase

Mathematics Subject Classification ID

Quantum equilibrium statistical mechanics (general) (82B10) Applications of functional analysis in quantum physics (46N50)

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